In a soup pot, heat oil and sauté the onions and garlic for 4 mins.
Add all the remaining ingredients (EXCEPT THE CHEESE)
Bring to a boil and simmer for a few hours.
Remove chicken, shred, add back in.
Add more chicken broth if desired. Bring to a boil then remove heat
Add the cheese, stirring until completely melted and then serve!
Top with tortilla chips, cheese, avocado, and whatever else you want!